94 lines
2.8 KiB
C
94 lines
2.8 KiB
C
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/*
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* Copyright (c) 2002 Michael Niedermayer <michaelni@gmx.at>
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*
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* This file is part of FFmpeg.
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*
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* FFmpeg is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* FFmpeg is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with FFmpeg; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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/**
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* @file
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* swap UV filter
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*/
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#include "avfilter.h"
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static AVFilterBufferRef *get_video_buffer(AVFilterLink *link, int perms,
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int w, int h)
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{
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AVFilterBufferRef *picref =
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avfilter_default_get_video_buffer(link, perms, w, h);
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uint8_t *tmp;
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int tmp2;
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tmp = picref->data[2];
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picref->data[2] = picref->data[1];
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picref->data[1] = tmp;
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tmp2 = picref->linesize[2];
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picref->linesize[2] = picref->linesize[1];
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picref->linesize[1] = tmp2;
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return picref;
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}
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static void start_frame(AVFilterLink *link, AVFilterBufferRef *inpicref)
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{
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AVFilterBufferRef *outpicref = avfilter_ref_buffer(inpicref, ~0);
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outpicref->data[1] = inpicref->data[2];
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outpicref->data[2] = inpicref->data[1];
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outpicref->linesize[1] = inpicref->linesize[2];
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outpicref->linesize[2] = inpicref->linesize[1];
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avfilter_start_frame(link->dst->outputs[0], outpicref);
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}
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static int query_formats(AVFilterContext *ctx)
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{
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static const enum PixelFormat pix_fmts[] = {
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PIX_FMT_YUV420P, PIX_FMT_YUVJ420P, PIX_FMT_YUVA420P,
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PIX_FMT_YUV444P, PIX_FMT_YUVJ444P, PIX_FMT_YUVA444P,
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PIX_FMT_YUV440P, PIX_FMT_YUVJ440P,
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PIX_FMT_YUV422P, PIX_FMT_YUVJ422P,
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PIX_FMT_YUV411P,
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PIX_FMT_NONE,
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};
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avfilter_set_common_pixel_formats(ctx, avfilter_make_format_list(pix_fmts));
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return 0;
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}
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AVFilter avfilter_vf_swapuv = {
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.name = "swapuv",
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.description = NULL_IF_CONFIG_SMALL("Swap U and V components."),
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.priv_size = 0,
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.query_formats = query_formats,
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.inputs = (const AVFilterPad[]) {
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{ .name = "default",
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.type = AVMEDIA_TYPE_VIDEO,
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.get_video_buffer = get_video_buffer,
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.start_frame = start_frame, },
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{ .name = NULL }
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},
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.outputs = (const AVFilterPad[]) {
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{ .name = "default",
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.type = AVMEDIA_TYPE_VIDEO, },
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{ .name = NULL }
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},
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};
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